27802716155 has 4 divisors (see below), whose sum is σ = 33363259392. Its totient is φ = 22242172920.

The previous prime is 27802716133. The next prime is 27802716163. The reversal of 27802716155 is 55161720872.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 27802716155 - 2¹⁸ = 27802454011 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2780271611 + ... + 2780271620.

It is an arithmetic number, because the mean of its divisors is an integer number (8340814848).

Almost surely, 2^27802716155 is an apocalyptic number.

27802716155 is a deficient number, since it is larger than the sum of its proper divisors (5560543237).

27802716155 is an equidigital number, since it uses as much as digits as its factorization.

27802716155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5560543236.

The product of its (nonzero) digits is 235200, while the sum is 44.

The spelling of 27802716155 in words is "twenty-seven billion, eight hundred two million, seven hundred sixteen thousand, one hundred fifty-five".